Blower casing



O. c. PALMER BLOWER cAsING March 17 Fiied May 1o, 1948 1N VEN TOR.

BY M K HQQ/VEVS Patented Mar. 17, n1953 UNITEDSTAT BLOWER CsING Oscar`C. Palmer,. Phoenix, Ariz., assignor to Palmer Manufacturing Corp.,Phoenix, Ariz.,

a corporation of Arizona Application Mayll), 1948, Serial No. 26,150

ment, and is particularlyl directed to improve-V ments 1in evaporativecoolers which are usedffor cooling 'and humidifying atmospheric air.-Evaporative'fcoolers commonly are provided with a fan or blower fordrawing air through water saturated pads and directing the air throughan outlet opening providedV in the shell or casing of the cooler unit..Y

l The principal object of this invention is to pro--V vide an improvedform of discharge opening for an .evaporative cooler..

Another Objectis to provide a cooler casing having a discharge openingin one wall thereof cooperatingin a" novel manner with the outlet of ablower housing mounted within the casing of the evaporative cooler unit.

kOther and more detailed objects and advantages will appear hereinafter.

In the drawings:

Figure l is a perspective view showing an evaporative cooler embodyingmy invention.

Figure 2 is a partial sectional view taken substantially on the lines2-2 as shown in Figure 1. Figure 3 is asectional detail takensubstantially on the lines 3-.3 as. shown in Figure 1.

Figure 4 is a partial sectional elevation taken substantially on thelines 4-4 as shownrin Figure 3. V

. Referring` to the drawings, the casing III is generally cubical inconstruction and fincludes the `usual top II, bottom I2, sides I3, .backI4, and front I 5. Evaporative cooler pads 9 are provided on each of thewalls I3 and I4, while the top and bottom walls II and I2 aresubstantially imperforate. Covers I6 having multiple apertures I1 may beprovided for the walls I3 and I4 if desired. A blower unit generallydesignated I8 is mounted within the enclosure I9 provided by the casingI8, and the function of this blower is to draw atmospheric air inthrough the apertures I1 and through water saturated evaporative padsinto the enclosure I9 and then to blow it outwardly through thedischarge opening 20 provided in the front wall I of the casing I0. Thisblower unit I8 may include a frame 2| mounted on rubber bushings 22attached to the bottom wall I2. A blower housing 23 which may be ofgeneral involute shape is provided with upper and lower walls 24 and 25and side walls 26 which cooperate to dene the outlet end 21 of theblower unit.

A rotor 46 is provided with the usual blades 28` and is mounted on arotary shaft 29 supported on pillow blocks 30. The pillow blocks 30 arebolted or otherwise secured to the frame 2l. A pulley 4 claims. (c1.23o- 232) 2 6 3| fixed to theshaft 29 is adapted to be driven. from anelectric motor 32 by means of a belt 33. Rotation of the pulley 3| bymeans of the motor 32 serves to cause rotation of the blower in thedirection indicated by the arrow 34 and thus draw air in laterallythrough the side openings 35 in the side-walls 26, and expel the airoutwardly through the outlet end of the blower unit.

g In accordance with my invention the front wall I5 is provided with anintegral protrusion 36 extending forwardly of the plane dened by thefront wall to enclose the outlet end of the blower unit I8. Thisprotrusion 36 has a front face 31 disposed in-a plane parallelto theplane of the Wall I5 and is provided with an integral reentrant ange 38extending rearwardly into the outlet end 21 of the blower unit andconforming to the shape thereto. The protrusion 36 and reentrant flange38 are preferably formed from the same flat sheet of material as thefront wall I5 and is preferably accomplished by means of 'stampingoperations. As shown in the drawings, the protrusion 36 vand re-entrantflange 38 cooperate to provide continuous recess 39 into which theoutletend 21 of the 4blower unit I8 projects. A continuous rubber-likegasket 40 is positioned between the ilange 38 and the walls of theblower unit forming the outlet end 21 in order to form a sealtherebetween. As shown in the drawings, this rubber-like gasket 40 maybe mounted on the outlet end 21 of the blower unit and adapted tocontact the flange 38.

Vertically extending direction controlling vanes 4I may be mountedwithin the space bounded by the continuous flange 38. These vanes 4I maycomprise strips having their ends turned at right angle and secured tothe flange 38 by means of suitable fastener elements 42. These elements42 may be adapted to permit the individual vanes 4I to be turned at anydesired angle as shown at 4Ia in Figure 3. This construction employingthe integral protusion 36 and the re-entrant continuous ange 38 reducesthe number of forming operations. simplifies the design, and eliminatesa number of parts employed in conventional evaporative coolers. There-entrant ilange 38 also provides a highly advantageous support for theoutlet end of the blower unit I8, thereby contributing to the supportingconnection between the blower unit I8 and the casing I0.

The front face 31 of the protusion 36 forms a convenient control panelfor regulating the operation of the evaporative cooler. The knob 43 maybe adapted to operate the control switch (not shown) for the motor 32,and the knob 44 .may be 3 21 connected to control the ow of water to thea blower unit mounted within the chamber and evaporative pads. Thecenter knob 45 may comhaving an outlet end for discharging air throughprise a temperature and humidity indicating dial the discharge opening,the discharge opening in if desired and may be provided with a suitablesaid wall being formed by an integral protusion mounting for the nameplate emblem. The elec- 5 extending forwardly from said Wall and havingtrical connections associated with the knob 43 as a reentrant angecooperating with the pro- Well as the piping associated with the knob 44tusion to dene a continuous recess, the recess have been'omitted in thedrawing for clarity of being adapted to receive the extending outlet endillustration, since these constructional details are of the blower unit,the outlet end of the blower well understood in the art and form no partof 10 'unit being supported by said integral reentrant my presentinvention. --iiange with the load of said outlet end being ap- Havingfully described my invention, it is to be plied to said flange in anarea disposed exteriorly understood that I do not Wish to be limited tothe of the plane of the latter of said Walls.

details herein set forth, but my invention is of 4. In ablowerinstallation having walls definthe full scope of the appendedclaims. L5 ingV a chamber, one of the walls having a dis- I claim:charge openingprovided therein through which 1. In a blowerinstallation, the combination of air may behexpelled from the chamber; acomwalls defining a chamber, and a blower unit posi- Y binationof ablower unit mounted within the tioned within the chamber, said blowerlunit hav- `chamber and having an Aoutlet end for discharging forwardlydirected walls dening an outlet 2O ing air through the dischargeOpening, the dise'nd, one of the walls formingv the chamber hav-l chargeopening insaidwall being formed rbyY an ing an integral prctusion`extending forwardly integral protuson extending forwardly from saidltherefrom and having an integral reentrant Well and heVng e.. reenbrehtflehge'COOpelefng fiange extending in telescopic relation with .rewiththe protusionto denne a continuous recess,A

peet to the .Outlet @nd of the blower unit, the 25 therecessjbeingadaptedto receive the extending. outlet end of the blowerunit being supportcdby outlet end of` theblOWer unit. the outlet end ofsaid reentrant ange with the load Aof said outthe blower unit beingsupported by said integral let end being app-lied to said flange in anarea, reentrantange with the load of said outlet end disposed exteriorlyof the plane of the latter of being applied t0 Seid flange in an areadisposed said wang 3o exteriorly ofthe plane of theflatter of saidwalls; 2; In a blower installation, the combination of and a resilientgasket interposedbetweenthe outwalls deni-ng a chamber, a blower unitposiiet end of the blower unitfand said ange' and tioned within thechamber, said blower unit havadapted t0 form a Seal therebetween.

ingA forwardly directed walls dening an outlet end, one of the wallsforming the chamber hav- 35 i v Y' v- OSCAR C..PALMER; ij'ngl anintegral protusion extendingforwardly if r v therefrom 'and having anintegralv reentrant REFERENCES CITED ange extending in telescopicrelation with re- A'The following' references are'ef record intheVs'p'ect to the outlet and of the blower unit, the 40 file of thispatent: l outlet end of the blower unit being supported v 'I1-E1: q-T vby said reentrant flange with thek load of said UNITED'STATES PA' soutlet end being applied to said ange in an area Number Name Dalle Ydisposed `exteriorly of the plane of the latter of @950,807 MOTS@ et" alMar-113,. 1934 said Walls, and a continuous rubber-like gasket 21922515'Feldel'maml -f----- NOV- 26,1935 interposed between the outlet of theblower unit; 45' V2,115,567 Anderson. Apk 26,' 1938 and Said flange l2,130,327 Galson Sept, 131938- 3. In a blower installation having wallsdening $225,740 y -Fenberg Dec. 24, 1940 a chamber, one of thewallshaving a discharge '2271342 KQP'S`----------- Jam 27; 19421 openingprovided therein through which air may 2,296,155 Felnhelg Sept. 15,1942'

